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🇵🇱Last verified June 28, 2026

Poland citizenship through a great-grandparent

Possible — evidence becomes the battle

Legally identical to a grandparent claim (no generational limit), but at this depth the fight is documentary: proving the ancestor held interwar citizenship and that nothing broke the chain across three generations.

The Rules That Decide It

  • Pre-1920 emigration is generally fatal — the ancestor must have been a citizen under the 1920 Act.

  • Pre-1920-emigration edge cases run on a "preponderance of evidence" mosaic: residency lists, school records, police registrations.

  • Record survival is a real constraint — some registries were destroyed in the wars.

What To Do Next

  1. 01

    Verify record survival for the ancestor's town before investing.

  2. 02

    Build the military-service picture early — it is both a common breaker and a common prover.

  3. 03

    Ask r/prawokrwi about your specific fact pattern; the community has mapped the edge cases.

Other Poland Ancestry Scenarios

Through a parentThrough a grandparentThrough a great-great-grandparent

Not Sure?

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Passport Heritage provides informational guidance and document organization services. We are not a law firm and do not provide legal advice. Rules can change without notice — always confirm current requirements with the relevant consulate, embassy or archive before acting.